DE2915924C2 - - Google Patents

Info

Publication number
DE2915924C2
DE2915924C2 DE2915924A DE2915924A DE2915924C2 DE 2915924 C2 DE2915924 C2 DE 2915924C2 DE 2915924 A DE2915924 A DE 2915924A DE 2915924 A DE2915924 A DE 2915924A DE 2915924 C2 DE2915924 C2 DE 2915924C2
Authority
DE
Germany
Prior art keywords
signal
comparator
frequency
circuit
amplifier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE2915924A
Other languages
German (de)
English (en)
Other versions
DE2915924A1 (de
Inventor
Peter Frederick Ashby-De-La-Zouch Leicestershire Gb Harrington
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Coal Industry Patents Ltd
Original Assignee
Coal Industry Patents Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Coal Industry Patents Ltd filed Critical Coal Industry Patents Ltd
Publication of DE2915924A1 publication Critical patent/DE2915924A1/de
Application granted granted Critical
Publication of DE2915924C2 publication Critical patent/DE2915924C2/de
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
    • G01F1/32—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
    • G01F1/325—Means for detecting quantities used as proxy variables for swirl
    • G01F1/3287—Means for detecting quantities used as proxy variables for swirl circuits therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
    • G01F1/32—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
    • G01F1/325—Means for detecting quantities used as proxy variables for swirl
    • G01F1/3282—Means for detecting quantities used as proxy variables for swirl for detecting variations in infrasonic, sonic or ultrasonic waves, due to modulation by passing through the swirling fluid
DE19792915924 1978-04-26 1979-04-20 Vorrichtung zum erfassen der geschwindigkeit eines stroemenden fluids Granted DE2915924A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1647378 1978-04-26

Publications (2)

Publication Number Publication Date
DE2915924A1 DE2915924A1 (de) 1979-11-08
DE2915924C2 true DE2915924C2 (fr) 1990-02-22

Family

ID=10077981

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19792915924 Granted DE2915924A1 (de) 1978-04-26 1979-04-20 Vorrichtung zum erfassen der geschwindigkeit eines stroemenden fluids

Country Status (8)

Country Link
US (1) US4318303A (fr)
AU (1) AU519465B2 (fr)
BE (1) BE875824A (fr)
CA (1) CA1135396A (fr)
DE (1) DE2915924A1 (fr)
FR (1) FR2424520A1 (fr)
GB (1) GB2020022B (fr)
ZA (1) ZA791976B (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3021897C3 (de) * 1980-06-06 1986-07-31 Auergesellschaft Gmbh, 1000 Berlin Elektronische Schaltungsanordnung für eine Meßwertaufbereitung einer durch eine Karmansche Wirbelstraße hervorgerufenen Wirbelfolge
US4375768A (en) * 1981-06-17 1983-03-08 Auergesellschaft Gmbh Electronic circuit for processing the measured values from a vortex sequence produced by a Karman vortex path
GB2116701B (en) * 1982-03-02 1985-09-25 Itt Ind Ltd Fluid flowmeter
GB2120384A (en) * 1982-05-19 1983-11-30 Bestobell Fluid flow meter
US4567776A (en) * 1982-06-30 1986-02-04 Kubota Trane Ltd. Fluid flowmeter of Karman vortex detecting type
JPH0654245B2 (ja) * 1988-04-19 1994-07-20 三菱電機株式会社 渦流量計
KR920010913B1 (ko) * 1988-04-19 1992-12-24 미쓰비시전기 주식회사 와 유량계
US5728947A (en) * 1996-06-12 1998-03-17 Asahi/America, Inc. Ultrasonic vortex flowmeter having clamp-on housing
US7134321B2 (en) * 2004-07-20 2006-11-14 Asml Holding N.V. Fluid gauge proximity sensor and method of operating same using a modulated fluid flow
US8464596B1 (en) * 2011-09-19 2013-06-18 Onicon, Inc. Vortex flow meter with gain control
CN103557031B (zh) * 2013-11-22 2015-11-04 中煤科工集团重庆研究院有限公司 矿井声发射实时自动监测仪
CN105317462A (zh) * 2015-11-13 2016-02-10 苏州扬佛自动化设备有限公司 一种具有写保护功能的煤矿安全监测系统
CN106640198A (zh) * 2016-12-28 2017-05-10 河南工业和信息化职业学院 一种煤矿井下巷道通风报警装置
US11460330B2 (en) 2020-07-06 2022-10-04 Saudi Arabian Oil Company Reducing noise in a vortex flow meter

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2887878A (en) * 1952-05-02 1959-05-26 Foxboro Co Amplifier for an induction flow meter
US3362221A (en) * 1964-06-30 1968-01-09 Hays Corp Magnetic flow transmitter system
US3709034A (en) * 1971-02-02 1973-01-09 Fischer & Porter Co Signal conditioner for recovering dominant signals from swirl-type meters
US3864972A (en) * 1973-03-12 1975-02-11 Fischer & Porter Co Signal recovery system for vortex type flowmeter
US3995482A (en) * 1973-03-30 1976-12-07 Chrysler Corporation Vortex swirl flowmeter sensor circuit
GB1569125A (en) * 1976-02-19 1980-06-11 Ici Ltd Vortex detection
US4094194A (en) * 1977-02-14 1978-06-13 Fischer & Porter Company Sensing system for vortex-type flowmeters
FR2384238A1 (fr) * 1977-03-18 1978-10-13 Schlumberger Compteurs Circuit electronique pour le traitement de signaux de capteurs debitmetriques

Also Published As

Publication number Publication date
AU519465B2 (en) 1981-12-03
US4318303A (en) 1982-03-09
GB2020022A (en) 1979-11-07
ZA791976B (en) 1980-05-28
FR2424520A1 (fr) 1979-11-23
DE2915924A1 (de) 1979-11-08
FR2424520B1 (fr) 1984-01-13
AU4643579A (en) 1979-11-01
GB2020022B (en) 1982-09-22
BE875824A (fr) 1979-10-24
CA1135396A (fr) 1982-11-09

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8125 Change of the main classification

Ipc: G01P 5/01

D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee